| 摘要 |
The oxygen mask has an evacuation hose (6) connected to the coupling (4) on the mask. An oxygen hose (7) runs from an open end in communication with the oxygen masks interior to an oxygen gas supply. - A suction hose (8) evacuates exhaled air, and has one end in open communication with the interior of the evacuation hose at a distance from the coupler The other end of the suction hose is connected to an evacuation system. The oxygen hose can pass through the evacuation hose to the coupler. |
